This NSA classification guide, dated 21 November 2011, covers signals intelligence material that as to be kept secret for more than the standard 60 years: see the Der Spiegel article The NSA in Germany: Snowden’s Documents Available for Download, 18 June 2014.

A brief description of a working group focused on monitoring and helping to exploit virtual private networks, or VPNs. Established in 2004, the working group publishes regular "VPN Target Activity Reports" on dozens of countries and organizations around the world. "These reports may help you exploit targets' VPNs more successfully," the chair of the working group writes.

This 24 February 2005 article from the internal NSA newsletter Foreign Affairs Digest describes third party cooperation and interoperability in High Frequency Direction-Finding (HFDF): see the Intercept article Japan Made Secret Deals With The NSA That Expanded Global Surveillance, 24 April 2017.

This 17 September 2012 article from the internal NSA newsletter SIDToday “SIGINT Philosopher” column, tackles the agency’s staff assessment procedures: see the Intercept article The Philosopher of Surveillance, 11 August 2015.

This extract from an NSA Information Paper dated 18 April 2013 shows that Jordan’s Electronc Warfare Directorate (EWD) is “the sole contributor to a large body of NSA’s reporting” on the Palestinian security forces: see the Intercept article Cash, Weapons and Surveillance: the U.S. is a Key Party to Every Israeli Attack, 4 August 2014.

These undated heat maps show the number of pieces of communications data the NSA gathers per country in a particular 30 day period, divided into telephony (DNR) and internet (DNI) metadata. Details in the second map refer to a period in January 2013 and third to a period ending in February the same year: see […]

This slide from a March 2013 NSA Special Source Operations presentation reveals the existence of a FISA Court order (case number 13-319) relating to “Germany”, among others: see the Der Spiegel article ‘A’ for Angela: GCHQ and NSA Targeted Private German Companies and Merkel, 29 March 2014.

This 18 May 2010 article from the NSA internal newsletter SIDToday outlines how the agency is reacting to the growth of mobile phone services on board commercial aircraft: see the Intercept article American and British Spy Agencies Targeted In-flight Mobile Phone Use, 7 December 2016.

TOP SECRET//COMINT//RELTO USA, FVEY
\\
(U//FOUO) In-Flight GSM
S32423/S3T1
The overall classification of this briefing is TOP SECRET//COMTNT//REI,
TOP SECRET//COMINT//REL TO USA, FVE...

This undated 81-page NSA presentation and accompanying handdrawn diagram, both produced by the author of ‘I hunt sys admins’ explains how a country’s entire network traffic could be fed into agency systems: see the Intercept article The Hunter, 28 June 2016.

The National Virtual Translation Center, created in 2003, is a clearinghouse for intelligence community interagency use of translators from government, military, academia, and the private sector. SID has a policy on how it will interact with the center.

This slide, taken from the NSA’s annual report on the state of its cooperation with foreign powers, details the countries that have received payments from the agency: see the book No Place To Hide, 13 May 2014.

The director of the National Virtual Translation Center describes the work of the new agency and opportunities for retired and current NSA linguists to make some extra money there, virtually. The FBI is the center's executive agent and conducts background investigations of the employees.

This 2009 NSA presentation, based on an internal agency newsletter article from 20 March that year, describes the growth in airlines offering onboard mobile phone services, which the Agency had alreadyu been actively collecting for at least a year: see the Intercept article American and British Spy Agencies Targeted In-flight Mobile Phone Use, 7 December […]

TOP SECRET//COMINT//RELTO USA, FVEY
\\
(U//FOUO) In-Flight GSM
S32423/S3T1
The overall classification of this briefing is TOP SECRET//COMTNT//REI,
TOP SECRET//COMINT//REL TO USA, FVE...

This undated presentation from the NSA’s European Cryptologic Center explains some of the activities of the agency’s main European base: see the Der Spiegel article Terrorverdächtige: NSA nutzte Erkenntnisse aus Deutschland-Filiale für Tötungen, 15 June 2014.

The U.S. closed a number of High Frequency Direction-Finding sensor sites in the 1990s. To ensure they're able to track signals in areas that had previously been covered by now-shuttered stations, the Signals Intelligence Directorate worked with Second and Third Party partners to share resources and establish a global direction-finding network.